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Old 13-10-2010, 08:15 AM
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sjastro
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Quote:
Originally Posted by higginsdj View Post
So one theory is that all matter has an antimatter mirror and because the universe is not symetrical they don't destroy each other....

We also have a BB theory that says the universe started as extremely hot energy, it cooled a little and particles formed. Well this supposedly means matter and antimatter was created. So when they formed why didn't they destroy each other? I'm basing this on the experiment I saw where a photon collided with a particle to create an electron and positron, ie they were created in the same space and kept apart by electric charge. What would keep them apart during the BB particle formation process?

So is antimatter natural or just the result of artificial experiments?

Cheers
The asymmetry of the Universe is one of the unsolved mysteries.

Unlike the popular science fiction notion that matter and antimatter annihilate each other at the drop of a hat, the reality paints a different picture.

The proton/antiproton and electron/positron colliders we have at our disposal indicates there is only certain probability that a reaction will occur.
This probability is defined by the particle physicist as the cross section.
In terms of classical physics the cross section is how big the target is for a collision to occur.

While antimatter was mathematically predicted, it is "natural".
Antimatter in the form of antineutrinos are created through the B decay of neutrons.

Regards

Steven
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